# Copyright (c) 2009 clueless
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.

.global _SendHookStub, _RecvHookStub
.extern _originalSendFunction, _SendHook
.text 


_SendHookStub:
    pushal                                  # ESP changes by 0x20 bytes
    mov         0x28(%esp), %eax            # Arg2 (size)
    mov         0x2C(%esp), %ecx            # Arg3 (buffer)
    push        %eax
    push        %ecx
    call        _SendHook
    popal
    movl        0x04(%esp), %eax            # Original instructions
    sub         $0x0C, %esp                 # ...
    jmp         *(_originalSendFunction)    # and continue with the actual send function



# Thanks to shadow^dancer for some quick info <3
_RecvHookStub:
    pushal
    push        %edi
    push        %ebp
    call        _RecvHook
    popal
    
    mov         0x28(%esp), %eax            # Original instructions
    movzbl      0x05(%eax), %ecx            # ...
    jmp         *(_originalRecvFunction)    # continue with actual receive
